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2016 TLX 9-Speed Transmission Jerking and Hesitation at Low Speeds

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Mike T. · rep 0 · May 26, 3:58 AM · 1 replies · solved · Question

Vehicle: 2016 Acura TLX V6 SH-AWD

Hey everyone, I've got a 2016 Acura TLX V6 SH-AWD with about 70,000 miles on it, and I'm starting to get really frustrated with the transmission.

Lately, it's been exhibiting some really rough shifts, especially when accelerating from a stop or at very low speeds. It feels like it's hunting for gears or just slamming into them, which is really jarring. Sometimes there's a noticeable hesitation before it finally engages.

I've heard about some issues with the ZF 9-speed in early TLX models. Has anyone else experienced this, and what was your fix? I'm hoping it's not a major repair.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 26, 3:58 AM

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ClearTheCode admin answer:

Rough shifting and hesitation in the 2016 Acura TLX with the ZF 9-speed automatic transmission is a known concern for some owners. This issue often stems from a combination of software logic and, in some cases, mechanical wear.

Here's what you should consider:

  1. Software Update: The most common initial fix involves a transmission software update. Acura released several updates for the ZF 9-speed to refine shift logic and improve smoothness. This should be your first step. A dealership can check if your vehicle has the latest software version.
  2. Transmission Fluid Service: While not always the primary cause, old or contaminated transmission fluid can contribute to rough shifts. Ensure your transmission fluid is at the correct level and has been serviced according to Acura's maintenance schedule. Using the correct Honda/Acura DW-1 or ATF Type 3.0 fluid is critical.
  3. Causes:
    • Software Glitches: The most frequent culprit, leading to improper shift timing and engagement.
    • Valve Body Issues: Less common, but a faulty valve body can affect hydraulic pressure and gear engagement.
    • Clutch Pack Wear: In higher mileage vehicles, wear in the internal clutch packs can cause slipping or harsh engagement.
    • Transmission Range Sensor: A malfunctioning sensor can send incorrect data to the Transmission Control Module (TCM), leading to erratic shifts. This could potentially trigger a P0700 (Transmission Control System Malfunction) or related codes.

When to See a Shop: If a software update and fluid service don't resolve the issue, or if you experience any warning lights (like the 'D' indicator flashing or a check engine light), it's crucial to have a qualified Acura technician diagnose the transmission. They can perform a deeper diagnostic scan for specific trouble codes (e.g., relating to shift solenoids like P0751, P0756, etc.), inspect the transmission's internal components, and recommend further action. Ignoring severe transmission issues can lead to more extensive and costly repairs down the line.

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